公开(公告)号：US07246482B2

公开(公告)日：2007-07-24

申请号：US10893035

申请日：2004-07-16

申请人： Timothy D. Mahoney ,  Mitchell J. Laidlaw ,  Anthony C. Libera

发明人： Timothy D. Mahoney ,  Mitchell J. Laidlaw ,  Anthony C. Libera

IPC分类号： F02C7/32 ,  F02C6/00

CPC分类号： F02C3/13 ,  F02C7/32 ,  F05D2260/4023 ,  F05D2260/4031

摘要： A bleed air power assist system is coupled to a gas turbine engine that includes a high pressure turbine, a low pressure turbine, and an electrical generator driven by the high pressure turbine. The bleed air power assist system selectively bleeds air discharged from the high pressure turbine and supplies it to an air turbine that is also coupled to the generator. Thus, the system selectively reduces the power extracted from the high pressure turbine. This, coupled with the bleed air that is diverted from the low pressure turbine, allows the low pressure spool to run at lower speeds when high engine thrust is not needed or desired, but when the generator is still needed to supply high electrical loads.

摘要翻译： 排气辅助系统与包括高压涡轮机，低压涡轮机和由高压涡轮机驱动的发电机的燃气涡轮发动机相连。 排放空气动力辅助系统选择性地将从高压涡轮排出的空气排出并将其提供给也耦合到发电机的空气涡轮机。 因此，系统选择性地降低从高压涡轮机提取的功率。 这与从低压涡轮转向的排放空气相结合，当不需要或期望高的发动机推力时，但是当发电机仍然需要提供高电负载时，允许低压阀芯以较低的速度运行。

公开(公告)号：US07484522B2

公开(公告)日：2009-02-03

申请号：US11040745

申请日：2005-01-21

申请人： Chris D. Eick ,  Paul W. Futa, Jr. ,  Mitchell J. Laidlaw ,  Anthony C. Libera ,  Donald M. Purcell

发明人： Chris D. Eick ,  Paul W. Futa, Jr. ,  Mitchell J. Laidlaw ,  Anthony C. Libera ,  Donald M. Purcell

IPC分类号： F02M37/00

CPC分类号： F02M31/20 ,  F02D33/006 ,  F02M37/0023 ,  Y02T10/126 ,  Y10T137/0396 ,  Y10T137/7762 ,  Y10T137/88062

摘要： The present invention provides a relatively simple way to automatically turn on and off the fuel to a starter/generator cooling system during engine start. The present invention takes advantage of a fuel pressure rise provided by an engine fuel boost pump during the period from engine start to engine idle conditions. This pressure rise is used to stroke a shutoff valve in a fuel return to tank valve (FRTTV), which shuts off the starter generator cooling fuel flow. This shutoff occurs automatically with no other external input from, for example, an engine controller. A check valve is also included that prevents back flow through the FRTTV in the event of an engine start with no aircraft pumps running.

摘要翻译： 本发明提供了一种在发动机起动期间自动将燃料打开和关闭到起动/发电机冷却系统的相对简单的方法。 本发明利用了从发动机起动到发动机怠速状态期间由发动机燃料增压泵提供的燃料压力上升。 该压力升高用于冲击回油阀（FRTTV）的截止阀，该阀关闭起动发电机冷却燃料流。 没有其他来自例如引擎控制器的外部输入自动发生关闭。 还包括一个止回阀，防止发动机起动时没有飞机泵运行，通过FRTTV回流。